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. Author manuscript; available in PMC: 2010 Aug 18.
Published in final edited form as: AIDS. 2009 Nov 27;23(18):2523–2532. doi: 10.1097/QAD.0b013e3283320ef3

Table 1.

Samples from women testing positive for HIV-1 in antenatal clinics in Zimbabwe, 1991–2006.

Cohort WHO SIDA HPTN 023 NIH
Collection date 1991 1998 2001 2006
 N samples 39 56 26 56
ARV exposure history None None None None
Study and sponsor ‘Natural history of MTCT’ ‘Feasibility of SC ZDV in pMTCT’ ‘HIVNET 023 phase I study of SD NVP’ ‘Drug resistance and pathogenesis in subtype C HIV-1’
WHO SIDA NIH NIH

HPTN, HIV Prevention Trials Network; NIH, National Institutes of Health; pMTCT, prevention of mother-to-child transmission; SC ZDV, short-course zidovudine; SD NVP, single dose nevirapine; SIDA, Swedish International Development Cooperation Agency; WHO, World Health Organization. References for cohorts: WHO [20], SIDA [21], HPTN 023 [19], NIH [22].